Compressor condenser unit



June 17, 1930. SPREEN 1,764,654

COMPRESSOR CONDENSER UNIT Filed June 3, 1927 SSheets-Sheet 1 June 17, 19.30. c. c. SPREEN 1,764,654

' COMPRESSOR CONDENSER UNIT Filed June 3, 1927 3 Sheets-Sheet 2 [12 U21: Z01" flit 4M H f 7737"??? June 17, 1930. c. CSPREEN COMPRESSOR CONDENSER UNIT Filed June 3, 1927 3 Sheets-Sheet 3 Patented June 17, 1930 UNITED STATES "PATENT OFFICE CHARLES C. SPREEN, 015 DETROIT, MICHIGAN, ASSIGNOR TO KELVIN ATOR CORPORA- TION, OF DETROIT, MICHIGAN, A CORPORATION OF MICHIGAN COMPRESSOR CONDENSER UNIT Application filed June 3, 1927. Serial No. 196,299.

. My invention relates to mechanical refrig crating apparatus and more particularly to compressor-condenser mechanism.

An object of this invention is to provide a compact compressor-condenser apparatus for a mechanical refrigerating system which will occupy a minimum area for the reception thereof.

Another object of my invention resides in a compact refrigerating apparatus in which the condenser is mounted upon the crank shaft of the compressor and is associated so that it will rotate therewith.

- a compressor-condenser mechanism for a mechanical refrigerating system in which my invention is incorporated.

Fig.2 is a sectional view of the same taken on line 2-2 of Fig. 1.

Fig. 3 is another sectional view of the same taken on line 3-3 of Fig. 1.

Fig. 4 is a sectional view of'the condenser illustrating a modified form of refrigerant collector.

Fig. 5 is a sectional view of the condenser and modified form of collector taken on line 5-5 of Fig. 4.

Referring now to the drawings by characters of reference, 11 represents a supporting base for a compressor casing 12, the compressor casing being removably secured upon the supporting base top by bolts 10. A crank shaft 13 extends transversely within the compressor casing and is supported atone end in abearing housing 13 formed interiorly of one wall of the casing, and is also mounted in a bearing member 13 which is removably bearing member secured to the compressor casing 12 by studs 13. A cylinder sleeve 18 is arranged in the upper portion of the compressor casing and a compressor piston 15 is arranged to reciprocate within the cylinder sleeve and is connected with the crank shaft 13 by a crank arm 15. The compressor casing is formed to provide a refrigerant inlet chamber 16 exteriorly of the cylinder sleeve and ports 16 are provided in the sleeve 18 to permit refrigerant to pass from the inlet chamber into the sleeve when openings 16 in the piston register therewith. It will be understood that the refrigerant passes through internal passages in the piston after entering the openings 16 and then into the compression chamber above the piston through suitable valve mechanism. A compressor head 18 is secured upon the top of the compressor casing and an outlet valve mechanism 18 is associated therewith, and a coupling 24 connects the refrigerant feed line 25 with the outlet valve.

The crank shaft projects beyond the bearing member 13 which is attached to the compressor casing, and serves as a support for the condenser as well as providing an outlet for refrigerant after being liquefied within the condenser. The bearing member 13 is provided with a recess at its outer end within which is arranged a bellows seal 23 one end of which is secured'to a ring 23 which is pressed toward the spring 28 to prevent compressed refrigerant within the crank case from escaping outwardly through the bearing member. The other end of the bellows 23 is connected to a plate 23 which is clamped stationary between an end of the bearing member 18 and an end of a collar member 22, the collar member 22 and plate 23 being secured to the flanged end of the 13 by a plurality of studs 22 A drum 20 is secured to the projecting end of the crank shaft and is preferably constructed to serve both as a condenser and a fly wheel. The drum is preferably arranged to transmit rotation from a source of power to thecrank shaft, and a guide member 21, for receiving a driving belt 21, is secured to the periphery of the drum. The drum is provided with aligned axial apertures which are closed by plates 19 and 19*, the plate 19 being keyed to the crank shaft adjacent its end. The crank shaft end is provided with an axially extending passage 30 terminating in an outlet portion which aligns with an outlet passage 30 in the collar member 22. A refrigerant conduit 31 is connected with the passage 30 by a coupling and conducts liquid refrigerant from the condenser drum to an evaporator (not shown).

A refrigerant collector 35 is arranged interiorly of the condenser drum. The collector hub member 32 is loosely mounted intermediate the end of the crank shaft and the interior wall of the drum plate 19*, one end of the hub telescopes within the passage 30 in the shaft end and is provided with an axially extending passage 30 which communicates with the shaft passage 30. The other end of the hub member is recessed to receive a coil spring 33 which engages a plate 33 which exerts pressure against a ball 34 which bears against the plate 19*. Nuts 19 are adjustable on the crank shaft end to adjust and position the condenser longitudinally upon the shaft to compress the spring 33 to retain the hub axially of the drum. A tube 36 is secured at one end in an aperture in the hub, in open communication with the passage 30", and is formed at its other end with a scoop 35 which lies adjacent the periphery of the drum. A weight member 37 is secured to the collector tube to maintain the collector in substantially stationary position when the condenser drum is rotating. The liquid refrigerant condensed within the drum will move to the periphery and the collector scoop is faced so that the centrifugal force of the liquid will automatically move the liquid through the tube, the outlet passages 30*, 30 and 30*- and the conduit 31.

A sealed housing is formed intermediate the condenser drum plate 19 and the collar member 22 for transmitting comp'ressed'mfrigerant to the drum. A metal bellows 28 extends around the crank shaft and is closed at one end by a plate 28 which is secured to the end of the collar member by the studs 22. A passage 26 extends through the collar memberand the plate 28 through which compressed refrigerant from the conduit 25 passes interiorly of the bellows and through apertures 28 in the plate 19 into the condenser drum. A bearing member 29 is.

pressed against the plate 19 by a bellows end plate 29 against which pressure is exerted by the coil springs 27. It will be seen that the seal between the collar member 22 and the drum will prevent the escape of compressed refrigerant exteriorly of the bellows. A metal bellows 42 encircles the shaft 13 intermediate the collar 22 and the plate 19, one end of the bellows being sealed with the plate 28 and the other end being sealed with a ring 43 carrying the bearing 44 which is pressed against the plate 19 by the coil spring 45.

The bellows 28 and 42 provide a sealed chamber through which the refrigerant passes while moving from the passage 26 to the passage 28.

The refrigerating system is of the compressor-condenser-evaporator type and the elements not shown or described are of a conventional type. It will be understood that a suitable connection is made between the inlet chamber 16 and the evaporator.

In the modified form of collector shown in Figs. 4 and 5, the scoop 4O enters directly into the hub member 32 and the weight member 41 is arranged on the opposite side of the hub member from the scoop. .The scoop is arranged to extend at the top of the condenser drum and is held substantially stationary in such position so that the condensed refrigerant rotating with the drum will fall from its periphery into the scoop 40 by gravity, and will in this manner be forced through tdhe passages 30*, 30 and 30 through the conuit 31.

0 It will be seen that the structure described is compact so that itwill take up a minimum area when installed. The drum serves as the condenser, and as the flywheel and driving medium for the compressor shaft. It will be further seen that with the refrigerant conductors described, a minimum length of conduit is necessary.

The pulley 21 driven by a conventional source of .power rotates the condenser 20 which is fixed to the crank shaft 13. The crank shaft in rotating efi'ects reciprocation of the piston to compress refrigerant in gaseous form returning from the evaporator, such refrigerant entering the sleeve 18 on the down stroke of the piston from the chamber 16 through the ports 16 in the sleeve and the ports 16 in the piston. Upon the upstroke of the piston the refrigerant is compressed and forced through the valved head 18 and through the conduit 25, the collar passage 26, the sealed chamber between the bellows 28 and 43, and through the port 28 into the condenser drum. The condenser drum rotates, and heat is transferred from the refrigerant therein by an air current di- ,rected thereagainst, or by any ,other conventional manner suitable for this purpose. Removal of heat from the refrigerant in the condenser will liquefy the refrigerant and it will be moved by centrifugal action to the periphery of the condenser where it will be collected by the scoop 35 from whence it moves through the passages in the arm 36, the passages 30 and 30 to the conduit 31 which leads to the evaporator.

Various changes can be made in the details of the mechanism described without departing from the spirit of my invention and the scope of what I claim.

the latter rigidly against rotation, a rotatable drive shaft for said compressor, a combined condenser and fly wheel comprising a hollow drum secured to an end of said drive shaft, and means for conducting refrigerant to and from said drum.

2. In a mechanical refrigerating system, a compressor drive shaft, a condenser secured to said compressor shaft having refrigerant inlet and outlet passages, and drive means mounted directly on said condenser for actuating said compressor drive shaft.

3. In a mechanical refrigerating system, a rotatable compressor drive shaft, a combined condenser and flywheel secured to said compressor drive shaft, and drive means for transmitting rotation directly to said combined condenser and flywheel.

4. In a mechanical refrigerating system, a rotatable compressor drive shaft, a hollow drum like condenser and flywheel structure secured to said drive shaft, and means associated with the periphery ofsaid drum through which rotation is transmitted thereto.

5. In a mechanical refrigeratin system, a rotatable compressor drive shaft, a condenser drum secured to said compressor shaft, and means for rotating said drum, said drum transmitting rotation to said compressor shaft.

6. In a mechanical refrigerating system, a compressor having a crankshaft projecting therefrom, the end of said projecting shaft having a passage therein, a seal for preventing the escape of refrigerant from said compressor adjacent said shaft, a collar loosely mounted on the projecting end of said shaft, said collar having inlet and outlet refrigerant passages, a condenser drum secured to the end of 'said projecting shaft, a'sealed chamber exterior of said projecting shaft and intermediate. said collar and condenser drum through which compressed refrigerant passes from said collar to said drum, means for collecting liquid refrigerant from the periphery of said drum when rotated and leading to the passage in said shaft, the outlet said condenser and said compressor, said duct being exterior of said shaft, and a duct piston, a rotatable driven shaft connected to operate said piston, a condenser receptacle fixed to said shaft, a sealed chamber surrounding said shaft and communicating with said condenser, a conduit intermediate said compressor and said sealed housing, and duct means for conducting refrigerant from said condenser. 7

9. In a refrigerant apparatus, a compressor structure, a rotatable condenser receptacle, a driven shaft for operating said compressor and said condenser, a stationary collar surrounding said shaft intermediate said compressor and said condenser, said 001- lar having separate ducts therein for conducting refrigerant to andfrom said condenser, said shaft having a duct therein leading from said condenser to one of the ducts in said collar, and a sealed chamber surrounding said shaft intermediate another duct in said collar and said condenser..

10. In a refrigerant" apparatus, a compressor structure, a rotatable condenser structure, a driven shaft for operating said compressor and said condenser, a ported collar intermediate said condenser and said compressor, sealing means surrounding said shaft between said collar and said compression-sealing means intermediate said collar and said condenser, said last mentioned sealing means providing a passage for refrigerant between said collar and said condenser, and a connection between said compressor and a port in said collar, said shaft having a port leading from said condenser to an outlet port in saidcollar.

11. In a refrigerating apparatus, a compressor drive shaft, a condenser .drum mounted on said drive shaft, and adjustable means varying the position of said condenser longitudinally upon said shaft.

In testimony whereof I hereunto aflix my.

signature.

CHARLES C. SPREEN.

in said shaft for conducting refrigerant from said condenser.

8. In a refrigerating apparatus, a compressor structure including a reciprocating 

